pH对316L不锈钢电化学性能的影响
Effects of pH on Electrochemical Properties of 316L Stainless Steel
摘 要
采用动电位极化、电化学阻抗谱和Mott-Schottky曲线研究了316L不锈钢在硫酸溶液和氢氧化钠溶液中的电化学行为。结果表明, 316L不锈钢在硫酸溶液和氢氧化钠溶液中钝化区间分别为0.1~0.9 V和-0.25~0.7 V; 316L不锈钢在氢氧化钠溶液中的阻抗模值较大。随扫描电位正移, 硫酸溶液与氢氧化钠溶液中的动电位电化学阻抗谱变化趋势差异明显; 0.1 V条件下形成钝化膜的Mott-Schottky曲线证明钝化膜由p型和n型两种氧化物组成。
钝化膜
电化学阻抗
Mott-Schottky曲线
316L stainless steel
passive film
EIS
Mott-Schottky curve
Abstract
The electrochemical behaviors of 316L stainless steel in H2SO4 and NaOH solutions were discussed by potentiodynamic polarization, electrochemical impedance spectroscopy (EIS) and Mott-Schottky curves. The results show that 316L stainless steel has a wide passive anodic region in the two solutions. EIS results indicat that the impedance value of the passive film in NaOH solution was higher than that in H2SO4 solution. Dynamic electrochemical impedance spectroscopy results demonstrate that variation trends of the EIS with the increase of potential in the two solutions were different. Mott-Schottky results show that the passive films of 316L stainless steel in H2SO4 solution and NaOH solution were all composed of p-type and n-type oxides.
中图分类号 TG172.5
所属栏目 试验研究
基金项目
收稿日期 2013/3/31
修改稿日期
网络出版日期
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备注李成涛,工程师,博士,
引用该论文: ZHANG Hui,LI Cheng-tao,SONG Li-jun,SHI Qing-feng,WANG Hai-wei,Ren Ai,LIU Fei-hua,LI Yan. Effects of pH on Electrochemical Properties of 316L Stainless Steel[J]. Corrosion & Protection, 2013, 34(7): 593
被引情况:
【1】彭新元,周贤良,华小珍, "pH和Cl-含量对316LN不锈钢电化学性能的影响",腐蚀与防护 36, 1053-1057(2015)
【2】邹章雄,金少申,刘昌禄,刘顺勤,马强,葛玉雄, "奥氏体不锈钢压力管道的应力腐蚀开裂及预防",理化检验－物理分册 51, 721-724(2015)
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【2】Lu Z P,Tetsuo Shoji,Meng F J,et al. Characterization of microstructure and local deformation in 316NG weld heat-affected zone and stress corrosion cracking in high temperature water[J]. Corrosion Science,2011,53(9):1916-1932.
【3】韩恩厚. 核电站关键材料在微纳米尺度上的环境损伤行为研究[J]. 金属学报,2011,47(7):769-776.
【4】Bilmes P D,Llorente C L,Saire Huamán L,et al. Microstructure,heat treatment and pitting corrosion of 13CrNiMo plate and weld metals[J]. Corrosion Science,2009,51(3):876-881.
【5】Gervasi C A,Méndezc C M,Bilmesd P D,et al. Analysis of the impact of alloy microstructural properties on passive films formed on low-C 13CrNiMo martensitic stainless steels[J]. Materials Chemistry and Physics,2011,126(1/2):178-182.
【6】杨世伟, 夏德贵, 杨晓, 等. 调质处理对17-4PH不锈钢耐海水腐蚀性能的影响[J]. 材料热处理学报, 2007(28): 184-187.
【7】Dacunhabelo M,Walls M,Hakiki N E,et al. Composition, structure and properties of the oxide films formed on the stainless steel 316L in a primary type PWR environment[J]. Corrosion Science,1998,40(2):447-463.
【8】Uemura M,Yamamoto T,Fushimi K. Depth profile analysis of thin passive films on stainless steel by glow discharge optical emission spectroscopy[J]. Corrosion Science,2009,51(6): 1554-1559.
【9】程学群, 李晓刚, 杜翠微, 等. 316L不锈钢在醋酸溶液中的钝化膜电化学性质[J]. 北京科技大学学报, 2007, 29(9): 911-915.
【10】程学群, 李晓刚, 杜翠微. 316L和2205不锈钢在醋酸溶液中的钝化膜的生长及其半导体属性的研究[J]. 科学通报, 2009, 54(1): 104-109.
【11】Goodlet G, Faty S, Cardoso S, et al. The electronic properties of spultered chromium and iron oxide films[J]. Corrosion Science, 2004, 46(6): 1479-1499.
【12】Abreu C M, Diaz B, Joiret S, et al. Comparative study of passive films of different stainless steels developed on alkaline medium[J]. Electrochimica Acta, 2004, 49(17/18): 3049-3056.
【13】Montemor M F,Ferreira M G S,Hakiki N E,et al. Semiconducting properties of thermally grown oxide films on AISI 304 stainless steel[J]. Corrosion Science, 2000, 42(4): 687-702.
【14】Montemor M F,Ferreira M G S,Hakiki N E,et al. Chemical composition and electronic structure of the oxide lms formed on 316L stainless steel and nickel based alloys in high temperature aqueous environments[J]. Corrosion Science, 2000, 42(9): 1635-1650.
【15】Sun M C, Wu X Q, Zhang Z E, et al. Oxidation of 316 stainless steel in supercritical water[J]. Corrosion Science, 2009, 51(5): 1069-1072.
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